[tex] \frac{2(r-3)}{4} - 8 = 50[/tex]
Add 8 to both sides.
[tex]\frac{2(r-3)}{4} = 50 + 8
Simplify.
[tex] \frac{2(r-3)}{4} = 58[/tex]
Then, multiply both sides by 4.
[tex]4 * \frac{2(r-3)}{4} = 58 * 4[/tex]
Simplify.
2(r - 3) = 232
Simplify.
2r - 6 = 232
Add 6 to both sides.
2r = 232 + 6
Simplify.
2r = 238
Divide both sides by 2.
r = 119
~Hope I helped!~